--John Brower

A is to B what C is to D是一个很典型的比较句型，意思是A对于B来说就如同C对于D一样.大家可以揣摩一下这个经典句型的用法。

Todays Recommend：

Some old people are oppressed by the fear of deathThe best way to overcome it-so at least it seems to me-is to make your interests gradually wider and more impersonal, until bit by bit the walls of the ego recede, and your life becomes increasingly merged in the universal life. An individual human existence should be like a river-small at first, narrowly contained within its banks, and rushing passionately past rocks and over waterfalls. Gradually the river grows wider, the banks recede, the waters flow more quietly and in the end, without any visible break, they become merged in the sea, and painlessly lose their individual being. The man who, in old age, can see his life in this way, will not suffer from the fear of death, since the things he cares for will continue

--Bertrand Russell

从上面的段落中我们可以看到，作者用河流比喻人生十分精辟。人生与河流是两个完全不同的概念，而作者通过用这个比拟把一些深奥难懂的道理明明白白地阐述出来，从而给人留下了难忘的印象。

7. 原因和结果

分析原因和结果，要力求理由充足，逻辑性强。事件发生的原因往往不止一个，在进行分析时，要尽量做到讨论全面和选材缜密。

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